Improved tank-furnace for making glass



GQLBUFPGBN. "IANK FURNAGE POR MAKING GLASS.

Patented May ,1v1-87o.

THM

` illltetl (Statea ateat Glil' ite.

GtlilORGrv LEUFF GEN, OF CHARLOTTENBURG, NEAR BERLIN, PRUSSIA.

Letters Patent No. 103,208, dated May 17, 1870.

`IMPIRQV'IEED TANK-FURNACE FOR MAKING GLASS.

The Schedule referred to in these Letters Eatent and' making part of thesame.

To all whom it may concern.

Be it known that I, Gaone LEUFFGEN, of Charlottenburg, near Berlin, inthe Kingdom of Prussia, have invented a new and useful Improvement inGlass Tank- Furnacc; and I do hereby declare the following to be a full,clear, and exact description thereof, which will enable those skilled inthe art to make and use the saine, reference being had totheaccompanying drawtherefractory lining is dispensed with.

My invention relatesto improvements in the con- Y `struction ofmelting-tank furnace for the manufacture of glass; and

It consists in making the. tank of iron or other suit- Also, incombining the same with a roof of refractory material.

Also, in lining the metallic tnnk with refractory material.

Alsoin so constructing the tank-furnace' that the `llames enter the ovenand act directly upon the snr- `face ofthe material on the hearth.

Also, in exposing the tank on all its surfaces to con- 4 tact with theatmosphere or anyother cooling agency,

so as to keep the sides andbottom of thetank cool,

Y thereby preventingthe destructionof the same.

rI-he lett-er c designates. my metallic tank, which is arched over by aroof, c,of refractory material, Vmade with two openings, d gencat .eachend, for `the introduction ot" the dame; which I prduce either byburning fuel directly on tire-grates, arranged at one or on `hoth ends.of the tank, or bythe introduction of combustible gases into thefurnace. l

'lhc material to vvbe melted is put into the tank and is acted upon bythe flame passing over its surface, and the side openings jf give theworkmen access to the interior ot the tank, and thel ames can leave theoven either through the side openings or through an opening speciallyprovided for that purpose'.

I support the tank above the door upn a substrncV ture, o, of open-work,which allows a free circulation of air to pass beneath, so as to coolthe bottom of the tank. v

The cooling of thc tank may also be promoted by an art-iticialdraught ofair made to act on all sides of the tank, and such a draught can beproduced by a .chimney or a blowing-engine, or water can be used as ameans of cooling. v

I lineV the interior of the tank with-refractory material, b, andsupport the arched roof c upon'the lining,` as shown in tig. 2.

My invention embraces the metallic tank with and without the lining b,and, when it is used without the lining, the roof c is supporteddirectly upon the walls ofthe tank and upon tlievsnbstructure c, asillustrated in figs. 3 and 7. V. y

The tank can be varied in size and also in form, (as 'is illustrated inthe modifications shown in thc diti'erent iigures,) according to thelquantity and quality of glass-to be produced.

In the unlined tank the sides and bottom are preserved from injury bythe cooling effects of the atmosphere or water, causing a coating ofchilled glass to form on vthe outside.

That I claim as new, and desire to secureby Letters Patent, vis

1. A melting-tank for the manufacture of glass, composed of metal,substantially as described.

2. The arched metallic tank-furnace for the manufact-ure of glass,provided with openings for the int-roductio'n and educton of flames toreduce the material in the tank, and with ,working openings,substantially las described.

3. The combination of themet-allc arched tankfurnace a fo1' themanufacture of glass, with an internal lining, b, of refractorymaterial, substantially as described. f

4. `A metallic tank for the manufacture of glass, arranged iu the mannerdescribed, that its outside sur face is exposedto the action of coolingagencies, substantiall y as and'for the purpose descrl'l'ed.

i GEORG LEUFFGEN.

Witnesses:

' H. KREISMANN,

J. H. F. PRILLWITZ.

